Some vols. have double year designation on spine, eg. 1956-1957
Published in two parts, Nov. 1949-Nov. 1965; Part II previously published as Part V in main volume, Nov. 1922-Nov. 1934. Part II (V) also published separately, 1923?-1948. Part II (V) ceased publication in 1966, when Part I split into a new Part I and a new Part II
Issued by the Ontario Department of Education
For microfiche ed. see FF/1336
24
Notes
Margins very narrow at gutter; chart text runs into gutter at beginning and end of book (unavoidable)
